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UNITED sTATEs PATENT OEEIOE.

SOLOMON RUTHENBRG, OF INDIANAPOLIS, INDIANA.

SHINGLE-MACHINE.

Specicaton of Letters Patent No. 27,075, dated February 7, 1860..

To all whom 'it may concern:

Be it known that I, SOLOMON RUTHEN- BURG, of Indianapolis, in the county of Marion and State of Indiana, have invented a new and-useful Improvement in Shingle- Machines; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings and to the letters of reference, marked thereon.

The nature of my invention consists in providing an alternate lever guide-for producing a rocking movement in the block table, from which the point of the shingle is alternated from one end of the block to the other, in an improved manner.

To enable others, skilledA in the manufacture of this class of machines, to manufacture and use my shingle machine, I will now proceed to describe its construction and operation, desiringV that the accompanying drawings shall constitute a part of my specification.

Like letters in these drawings always refer to like parts.

Figure l is a perspective view of the entire machine. Fig. 2 is the cam, or eccen tric, through which motion is imparted to the knife. Fig. 3 is a side view of two cams, showing their relation to each other when that number are used, and Fig. 4 represents the click guides, for giving a vii bratory motion to the shingle-block frame.

The general outlines of my machine-so far as relates to the frame, the crank, the fly-wheel, and the knife-sashw-together with the knife itself, are quite similar to some other machines in use.

It will therefore be seen, that my invention consists in an improved means of communicating motion bot-h to the knife and the shingle-block sash.

W, is a heavy fly-wheel, which may also be used as a crank to impart motion to the camshaft A.

B, is the cam or eccentric on shaft A. The roller-cZ-runs in a groove on the pe riphery, and, being firmly attached'to the knife shaft E forces it up and down alternately, with every revolution of the eccentric B. This knife shaft E, has a guide at its upper end for holding it steady, while at its lower end it is bolted to the knife sash or frame S. To this sash, the knife-K- is firmly fastened. The knife, K, plays just over the vibrating block table, O,

L, is a lever-fulcrumed to the inside of main frame-work, while at its lower end the oscillating block table, O, is attached, and upon the upper end is a self-adjusting ovoid cam-swiveled in its center to said lever. This swivel cam runs in cross-tracks-Ji. e., as it plays up and down it crosses its own track alternately. It is made to do this by the arrangement seen in Fig. 4L. s, s, represent this swivel cam at the two lower extremes, and, since it carries the upper end of the lever, L, with it in its zig-zag course, these two positions determine the amount of vibration imparted to the block table, O. The swivel cam, s, must be long enough to reach from the inside bulge, or projection, on the click guide, c, and lap onto the V-shaped pointI above and below said clicks. This insures its taking a straight course in passing from one side of Fig. 4 to the other. When it reaches the top extreme-on either side-the top ends of the click-guides c, c, drop, or are forced down behind it by springs which gives it parallel or straight direction in its downward course. The amount of motion o'iven to the block table, O, may be governed by making these crossways wider, o1', by` changing the fulcrum of the lever, L,-either up or down.

In Fig. 3, two cams, or eccentrics are exhibited-both on one shaft, quite close to each other; but it will be observed that they bear a different relation to the shaft in their axis; in other words the longest axis of one cam is placed where the short axis of the other is. lVith these it is necessary to use a friction roller, d-0Z, on each side of shaft E-the shaft passing between the cams B-B. Then t-he two are thus used there is no necessity of a groove as seen in B. The reason is apparent, for, while the roller on one side is traveling out toward the long axis of one eccentric, the other is traveling in toward the short axis of the other.

For soft timber, a single eccentric-as in Fig. 1--is sufficient, while it is necessary to use the double eccentrics-as in Fig. 3for cutting hard stuff,

It may be well to say just here, that the pause in the oscillating block-table O, which must be made while the shingle is being cut, is made when the swivel cam-s-is passing the outer or straight side of the click guides-0, o-always in its downward course.

Inasmuch as I am assuredthat I have a new feature in shingle machines, by the adoption of a peculiarly shaped cam, or eccentric, B, for imparting, motion to my knife, it may be proper to describe it minutely. 1

After it isvascertained how much more power is required to cut a shingle, than to lift the knife back toits hi hest elevation, a

wcircle of the size-of the s aft (or a little larger) is divided into as many parts as the fractional proportionof the back-stroke to the working or down stroke may indicate.` See, 72 Fig. 2. For example z-if it requires fourftimes as much power to cut ashingle asit does to lift the knife-sash, then divide theV circle into five equal parts, of which I take four-fifths for the down-stroke and one fifth for the 11p-stroke. In order that the down-stroke shall be accomplished by the movement of the knife sash equal distances in equal times, VI divide the full stroke intoV four equalpartsw-see 1, 2, 3, and 4, Fig. 2-v

then draw a curved line aroundfour fifths of the circumferance-z. e., a-circumferal line, which moves to the left from, 5, in Fig. 2, to, 1, from. thence to, 2, (leaving the center exactly one fifth of the entire circumference, in goinr from one division to the other,

until it reac es, 4, which is .the entire and complete stroke) and so on.- When the line reaches,4, then it moves `with `a slight curve to-`5.-; from 4 Vto 5 is the back stroke,

I which it will be seen `is accomplished in one fifth of therevolution ofthe eccentric` n Now 1 the. economy of this arrangementis seen in the fact that I use nearly all of the Ventire revolution of my cam or eccentric to do the effective workin cutting the shingle, then I use thelast fth of the circle do the light work-orto return the knife to its` place again. In these particularfractions, inthe division of the workingfunctions ofmymachine, the model is my guide, butlI wish it understood that I Iamnotconfined to .these `particular divisions, asI contemplate other proportions than thosejsetjforth. The plan Afor economizing.. ower,` here setforth, is

what IcontendV or," andywhatlfeelcony i .Y n y.

scious is 4unknown invothers. l i i The mode of operation. is` simple and` ap.- parent from its very nature." 1 Turning the wheel, W,flimparts1notion tothefeccentric :i

B, and `this toY the "knife" sash".A WhenV the knife sash passesup y and" down gon its ways, it carries` the block table,` and Connected oscillating level? L; andA this lever is tripped at its upper end bythe-device seen inFig.-v

4," which rocksAthefblockltable, so as to alternate the proximity of itssidesto thcontrary ends of the knife, andfsoalternates theV point -of .the shingle-(bring it `first` at oneend of andso'on. p

Now, having thus` fully vdescribed my 1in# vention,fwhat- Iclaim as fm inventiomand the block andthen attheotherf- F72 desire tosecure by"Lett`ers` `atent, il J Y The as set` orthf-in combination" `:with thevvi brating block table, O,lthroug`hv lever,` Iig?-` operating in conjunction with mymachineff; substantlally as set forthrin specification.V l* d i d.

' *SOLOMON`RUCPHENew@1lx VVitnessesr-` i 

